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Oregon Water Science Center

Columbia River Basalt Stratigraphy in Oregon

In Cooperation with the Oregon Water Resources Department (OWRD)

Table of Geologic Units for Site UMAT 54913

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USGS Site ID: Site identification number permanently assigned to the well by the U.S. Geological Survey and recorded in National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.

Sequence Number: Sequence number assigned to identify a record.

Depth to Top of Interval: The depth to the top of this unit, in feet below land surface.

Depth to Bottom of Interval: The depth to the bottom of this unit, in feet below land surface. This field should be specified for all units, except the last one in the hole.

Unit code: The name of aquifer or geologic unit stored by the U.S. Geological Survey in National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.

Lithology code: The principal lithology of this unit stored by the U.S. Geological Survey in National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.

Description of material: The adjective modifier to describe the rock type.

--, no data/unknown.

USGS Site ID Well Log ID Sequence Number Depth to Top of Interval Depth to Bottom of Interval Unit code Lithology code Description of material
454927119051401 UMAT 54913 1 0 34 PALOUSE FORMATION Loess --
454927119051401 UMAT 54913 2 34 37 ALKALI CANYON FORMATION OF DALLES GROUP Sandstone --
454927119051401 UMAT 54913 3 37 80 UMATILLA MEMBER OF SADDLE MOUNTAINS BASALT Basalt --
454927119051401 UMAT 54913 4 80 170 BASALT OF LYONS FERRY OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BA Basalt FLOW 1
454927119051401 UMAT 54913 5 170 220 BASALT OF SENTINEL GAP OF FRENCHMAN SPRINGS MEMBER OF WANAPUM B Basalt FLOW 1
454927119051401 UMAT 54913 6 220 250 BASALT OF SENTINEL GAP OF FRENCHMAN SPRINGS MEMBER OF WANAPUM B Basalt FLOW 2
454927119051401 UMAT 54913 7 250 330 BASALT OF SAND HOLLOW OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BA Basalt FLOW 1
454927119051401 UMAT 54913 8 330 495 BASALT OF SAND HOLLOW OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BA Basalt FLOW 2
454927119051401 UMAT 54913 9 495 650 BASALT OF SAND HOLLOW OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BA Basalt FLOW 3
454927119051401 UMAT 54913 10 650 750 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt --
454927119051401 UMAT 54913 11 750 800 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
454927119051401 UMAT 54913 12 800 835 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
454927119051401 UMAT 54913 13 835 870 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 3
454927119051401 UMAT 54913 14 870 915 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 4
454927119051401 UMAT 54913 15 915 939 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 5
454927119051401 UMAT 54913 16 939 978 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 6
454927119051401 UMAT 54913 17 978 1122 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 7
454927119051401 UMAT 54913 18 1122 -- SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt FLOW 8
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Page Last Modified: Wednesday, 09-Jan-2013 18:49:00 EST